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FAS 604

FAS 604 - pic courtesy of Joe Giunti

Sight Adjustments

Clockwise down.

Clockwise right.

Trigger Adjustments

FAS 604 trigger adjustments

Takeup Length and Trigger Position

Adjust with allen key (#2).

First Stage Trigger Travel

Adjust with allen key (#3).

Second Stage Trigger Travel

Adjust with allen key (#4).

Trigger Weight

Turn allen key (#1) clockwise to increase weight.

Trigger Stop

Using thin allen wrench or pin through hole, trigger stop behind trigger may be screwed in or out (as shown in diagram).
For newer models, turn allen key set in trigger shoe clockwise until trigger will not release, then back off one quarter turn (not shown in diagram).

Exploded View